What is the difference between a sprain and strain?
The difference between a sprain and a strain is that a sprain injures the bands of tissue that connect two bones together, while a strain involves an injury to a muscle or to the band of tissue that attaches a muscle to a bone.
What is the formula for shear strain?
shear strain = Δ x L 0 . shear stress=F∥A. shear stress = F ∥ A . The shear modulus is the proportionality constant in (Figure) and is defined by the ratio of stress to strain.
What is the formula for stress and strain?
stress = (elastic modulus) × strain. As we can see from dimensional analysis of this relation, the elastic modulus has the same physical unit as stress because strain is dimensionless.
What is the formula of volumetric strain?
Volumetric Strain: The volumetric strain is the unit change in volume, i.e. the change in volume divided by the original volume.
Why is volumetric strain negative?
The negative sign in the bulk modulus shows that the volume gets smaller than the original volume, when there acts the stress. …
Where in the stress strain curve the Hooke’s law is valid?
8. Where in the stress-strain curve, the hooke’s law is valid? Explanation: The hooke’s law itself states that it is valid only up to the elastic range of the material I.e. only to that limit where the material is behaving elastic.
What is bulk strain?
[′balk ‚strān] (mechanics) The ratio of the change in the volume of a body that occurs when the body is placed under pressure, to the original volume of the body.
What is the shear strain?
Shear strain is the ratio of the change in deformation to its original length perpendicular to the axes of the member due to shear stress. Shear stress is stress in parallel to the cross section of the structural member.
Is bulk strain negative?
I noticed that the bulk modulus often has a negative sign appended to it in order to cancel with a negative change in an object’s volume; this allows the bulk modulus to be positive.
What is linear strain?
[′lin·ē·ər ¦strān] (mechanics) The ratio of the change in the length of a body to its initial length. Also known as longitudinal strain.
What is the difference between linear strain and shear strain?
It is simply a ratio of the change in length to the original length. Deformations that are applied perpendicular to the cross section are normal strains, while deformations applied parallel to the cross section are shear strains. For linear, elastic materials, stress is linearly related to strain by Hooke’s law.
Which is the not basic type of strain?
Right Answer is: C Area strain does not exist.
What is the difference between normal strain and shear strain?
Strains are classified as either normal or shear. A normal strain is perpendicular to the face of an element, and a shear strain is parallel to it. These definitions are consistent with those of normal stress and shear stress.
Is stress dependent on strain?
Yes, Stress is depends upon strain. This relation is easily explained through Hooke’s law. This law states that “the strain in a solid is proportional to the applied stress within the elastic limit of that solid”. After elastic limit the body start to deform.
What causes shear strain?
Shear stress, force tending to cause deformation of a material by slippage along a plane or planes parallel to the imposed stress. The resultant shear is of great importance in nature, being intimately related to the downslope movement of earth materials and to earthquakes.
What is the point P shown on the stress strain curve?
What is the point P shown on the stress strain curve? Explanation: It is the point showing the maximum stress to which the material can be subjected in a simple tensile stress.
What is creep failure?
Creep may be defined as a time-dependent deformation at elevated temperature and constant stress. It follows, then, that a failure from such a condition is referred to as a creep failure or, occasionally, a stress rupture. The temperature at which creep begins depends on the alloy composition.
What is necking in stress strain curve?
Necking occurs when an instability in the material causes its cross-section to decrease by a greater proportion than the strain hardens when undergoing tensile deformation. Necking behavior is disregarded in calculating engineering stress but is taken into account in determining true stress.
What is ductility in stress strain curve?
Ductility is defined as the ability of a material to deform plastically before fracturing.
What is yield stress formula?
The most common engineering approximation for yield stress is the 0.2 percent offset rule. To apply this rule, assume that yield strain is 0.2 percent, and multiply by Young’s Modulus for your material: σ = 0.002 × E \sigma = 0.002\times E σ=0.
Why is ductility not just the same as fracture strain?
Question: Ductility Is A Measure Of A Material’s Ability To Be Deformed Without Breaking. Why Is Ductility NOT Just The Same As Fracture Strain? Because The Fracture Strain Does Not Take Into Account Work Hardening B. Because The Fracture Strain Is A Measure Of Engineering Or Nominal Strain, Not True Strain.
What is ductility example?
Ductility is the physical property of a material associated with the ability to be hammered thin or stretched into wire without breaking. A ductile substance can be drawn into a wire. Examples: Most metals are good examples of ductile materials, including gold, silver, copper, erbium, terbium, and samarium.
What is an example of malleability?
Examples of malleable metals are gold, iron, aluminum, copper, silver, and lead. Gold and silver are highly malleable. When a piece of hot iron is hammered it takes the shape of a sheet.
What is an example of brittleness?
Copper, aluminum, and steel are examples of ductile metals. The opposite of ductility is brittleness, where a material breaks when tensile stress is applied to lengthen it. Examples of brittle materials include cast iron, concrete, and some glass products.
What is ductility formula?
Ductility is the percent elongation reported in a tensile test is defined as the maximum elongation of the gage length divided by the original gage length.